#include <stdio.h>
#include <stdlib.h>
 
main()
{
	   int dividend = 20;
	      int divisor = 0;
	         int quotient;
		  
		    if( divisor == 0){
			          fprintf(stderr, "除数为 0 退出运行...\n");
				        exit(EXIT_FAILURE);
					   }
		       quotient = dividend / divisor;
		          fprintf(stderr, "quotient 变量的值为: %d\n", quotient );
			   
			     exit(EXIT_SUCCESS);
}
